Performance Air Cleaner, what works well?
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Road Warrior
Joined: Jan 2006
Posts: 1,808
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From: Waynesville, NC
Performance Air Cleaner, what works well?
Ok, this is to add to the new 2 into 1 pipe that I am going to get. I have the HD stage one AC. Is there something out there that is worth the money and works well??
I like the cool look of the HD heavy breather, but not sure if this would be the way to go? I have heard that Zippers makes an air filter element that is larger and will work with my current HD foot ball cover. Then there is the Big Sucker too.
I want to be able to ride in the rain if I had to and not have issues.
Anyone have any sugestions out there?
If you have not read my thread on 2 into 1 pipes, my HD is a 2006 Street Glide stock 88 with HQ - 0034 cams, current pipes are Hard Krome 3" T-rex True duals.
Thank you
I like the cool look of the HD heavy breather, but not sure if this would be the way to go? I have heard that Zippers makes an air filter element that is larger and will work with my current HD foot ball cover. Then there is the Big Sucker too.
I want to be able to ride in the rain if I had to and not have issues.
Anyone have any sugestions out there?
If you have not read my thread on 2 into 1 pipes, my HD is a 2006 Street Glide stock 88 with HQ - 0034 cams, current pipes are Hard Krome 3" T-rex True duals.
Thank you
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,410
Likes: 8
From: Knoxville, TN
I've been looking into that K&N Aircharger.
Lots of good reviews on it.
Same style as the SE Heavy Breather.
K&N claims a 12HP increase just with their breather.
I don't know how much of that is true, though.
But I'll be running it!
Lots of good reviews on it.
Same style as the SE Heavy Breather.
K&N claims a 12HP increase just with their breather.
I don't know how much of that is true, though.
But I'll be running it!
Thread Starter
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Road Warrior
Joined: Jan 2006
Posts: 1,808
Likes: 0
From: Waynesville, NC
Thanks
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,410
Likes: 8
From: Knoxville, TN
Some of the best internet pricing I've found on both HD parts and aftermarket parts come from Mark @ M & M Cycles.
Damn honest guy!
Shoot him an email for a quote.
www.mandmcycles.com
Road Master
Joined: Apr 2009
Posts: 973
Likes: 1
Ok, this is to add to the new 2 into 1 pipe that I am going to get. I have the HD stage one AC. Is there something out there that is worth the money and works well??
I like the cool look of the HD heavy breather, but not sure if this would be the way to go? I have heard that Zippers makes an air filter element that is larger and will work with my current HD foot ball cover. Then there is the Big Sucker too.
I want to be able to ride in the rain if I had to and not have issues.
Anyone have any sugestions out there?
If you have not read my thread on 2 into 1 pipes, my HD is a 2006 Street Glide stock 88 with HQ - 0034 cams, current pipes are Hard Krome 3" T-rex True duals.
Thank you
I like the cool look of the HD heavy breather, but not sure if this would be the way to go? I have heard that Zippers makes an air filter element that is larger and will work with my current HD foot ball cover. Then there is the Big Sucker too.
I want to be able to ride in the rain if I had to and not have issues.
Anyone have any sugestions out there?
If you have not read my thread on 2 into 1 pipes, my HD is a 2006 Street Glide stock 88 with HQ - 0034 cams, current pipes are Hard Krome 3" T-rex True duals.
Thank you
Opinions may vary on this but from looking at hundreds of dyno charts, the AC is just not that relevant as long as it is capable of flowing enough air to meet the demands of the engine. Most any aftermarket AC will do that.
Outstanding HDF Member
Joined: Jul 2007
Posts: 3,410
Likes: 8
From: Knoxville, TN
In my opinion, most of the air cleaners perform about the same, the real issue is to simply find one that you dig the looks of more than anything.
Opinions may vary on this but from looking at hundreds of dyno charts, the AC is just not that relevant as long as it is capable of flowing enough air to meet the demands of the engine. Most any aftermarket AC will do that.
Opinions may vary on this but from looking at hundreds of dyno charts, the AC is just not that relevant as long as it is capable of flowing enough air to meet the demands of the engine. Most any aftermarket AC will do that.
A forced induction style filter setup such as the K&N or SE Heavy Breather will cram more air through the throttle body than say a Ness style breather.
Also, the Doherty setup has a "mini" velocity stack built into it, unlike the Ness setup.
I'm not knocking the Ness setup, they're nice..but I don't think they can do what others can.
Wimmer Machine makes some of the finest LOOKING breathers available...they flow like crap, though.
I've used the K&N RK-3910 filter for the last two years.
It utilizes the stock "football" cover.
It's never been affected by riding in South Florida's torrential downpours.
It flows more air than most any v-twin will ever need.
The RK-3910's little brother, the RK-3909 will provide 233.3 CFM of air flow.
The stock 96ci motor only requires around 172.7 CFM at 100% VE.
It utilizes the stock "football" cover.
It's never been affected by riding in South Florida's torrential downpours.
It flows more air than most any v-twin will ever need.
The RK-3910's little brother, the RK-3909 will provide 233.3 CFM of air flow.
The stock 96ci motor only requires around 172.7 CFM at 100% VE.
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Road Master
Joined: Apr 2009
Posts: 973
Likes: 1
I don't know that that's entirely true.
A forced induction style filter setup such as the K&N or SE Heavy Breather will cram more air through the throttle body than say a Ness style breather.
Also, the Doherty setup has a "mini" velocity stack built into it, unlike the Ness setup.
I'm not knocking the Ness setup, they're nice..but I don't think they can do what others can.
Wimmer Machine makes some of the finest LOOKING breathers available...they flow like crap, though.
A forced induction style filter setup such as the K&N or SE Heavy Breather will cram more air through the throttle body than say a Ness style breather.
Also, the Doherty setup has a "mini" velocity stack built into it, unlike the Ness setup.
I'm not knocking the Ness setup, they're nice..but I don't think they can do what others can.
Wimmer Machine makes some of the finest LOOKING breathers available...they flow like crap, though.
This has been debated for years and everything I have read has shown there to be ZERO value from that design. It looks cool but that's about it.
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Outstanding HDF Member
Joined: Jul 2007
Posts: 3,410
Likes: 8
From: Knoxville, TN
There is no ram air effect from a Heavy Breather. None. The engine is a vacuum pump and sucks air in. The filter element alone is enough to overcome whatever ram air effect might exist.
This has been debated for years and everything I have read has shown there to be ZERO value from that design. It looks cool but that's about it.
This has been debated for years and everything I have read has shown there to be ZERO value from that design. It looks cool but that's about it.
So you're telling me I didn't really see what I saw?
I had a Wimmer breather and got crap numbers with my build.
72 HP
I changed my breather to a Doherty.
That one change was a 21 HP increase.
And ALL breathers are the same, as you say?
LOL
Now you're claiming that a forward facing breather setup like the SE Heavy Breather.can't force anymore air into a throttle opening than say a Ness style breather?
LOL
OK!
Road Master
Joined: Apr 2009
Posts: 973
Likes: 1
LOL
So you're telling me I didn't really see what I saw?
I had a Wimmer breather and got crap numbers with my build.
72 HP
I changed my breather to a Doherty.
That one change was a 21 HP increase.
And ALL breathers are the same, as you say?
LOL
Now you're claiming that a forward facing breather setup like the SE Heavy Breather.can't force anymore air into a throttle opening than say a Ness style breather?
LOL
OK!
So you're telling me I didn't really see what I saw?
I had a Wimmer breather and got crap numbers with my build.
72 HP
I changed my breather to a Doherty.
That one change was a 21 HP increase.
And ALL breathers are the same, as you say?
LOL
Now you're claiming that a forward facing breather setup like the SE Heavy Breather.can't force anymore air into a throttle opening than say a Ness style breather?
LOL
OK!
The Ram Air breathers do NOT work any better than a regular air cleaner with good flow and a high flow element. I don't know if you know who Doc is but he's a Harley genius who has forgotten more than either of us will ever know. Here is one thread of a million I can produce that will have extremely knowledgeable, performance engine builders who will tell you that Ram Airs like a Hypercharger have no positive effect on engine power.
https://www.hdforums.com/forum/engin...od-or-bad.html
If you quit after this link I won't post anymore....but there are hundreds to be had. Trust me...I am a power junkie. I've studied the issue intensely to find the absolute best combo when I put together my Night Train.
A quality AC with a good flowing filter like a K&N is really all you need. Many AC's fit that bill...the Ness Big Sucker, the SE Heavy Breather, etc etc etc.
A simple search of this forum can back up what I've said. The link I posted above is a good start.
Last edited by Hammer107; Jun 14, 2009 at 11:57 AM.
